Mixing-machine.



. PATENTED MAY 21, 1907.

J. 1). GAMPBELL.

MIXING MAGHINE. APPLICATION I'ILEDIEB. 23, 1906.

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ATTORNEYS No. 854,029. I PATENTED MAY 21, 1907. J'". D. CAMPBELL. MIXING MACHINE.

APPLIOATIOTI FILED FEB. 23, 1908.

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ATTORNEYS No.- 854,029. PATENTED MAY 21, .1907.

' J. D. CAMPBELL.

MIXING MACHINE.

APPLICATION FILED FEB. 23. 1908.

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I I n 1 BY I ATTORNEYS No. 854,029. PATENTED MAY 21, 1907. J. D. CAMPBELL;

MIXING MACHINE.

APPLIOATION FILED FEB. 23.1906.

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WITNESSES: I lNVENTOR Y BY WM l ATTORNEYS UN TED STATES PATENT OFFICE.

JOSEPH D. CAMPBELL, OF COLUMBUS, OHIO, ASSIGNOR TO THE AMERICAN CONCRETE MACHINERY COMPA NY, OF COLUMBUS, OHIO, .r CORPORA- TION OF OHIO.

MIXING-MACHINE.

Specification of Letters Patent.

Patented May 21, 1907.

A p i ati filed February 23,1906. Serial No. 302,381-

To (all whom it may cancer-1..-

Be it known that I, JOSEPH D. CAMPBELL, a citizen of the United States, residing at Columbus, in the county of, Franklin and State of Ohio, have invented certain new and useful Improvements in Mixin .iachines, of which the following is a speci ;,ation.

This invention relates to new and useful improvements in concrete mixers.

The object of the invention is to provide a mixing machine, so-construeted as to obviate the use of conveyors and platforms and to provide one which may be operated from a common level.

Another object is to provide a device of the character described that will be strong, durable and cllicient and one in which, the several parts will not be liable to get out of working order.

With the above and other oojeets in view, the invention consists of the novel details ol'- construction and operation, a preferable embodiment ollwhich is described in the specification and illustrated in the azeompanying drawings, wherein:

' Figure 1 is a side elevation of my machine. Fig. 2 is an elevation of the opposite side. Fig. 25 is an end elevation. Fig. 4 is an elevation. of the opposite end. Fig. I is a lan View. Fig. 6 is a view looking in the direction of the arrow in Fig. 1, taken on the. line :1: :c, and, Fig. 7 is a side elevation showing the drum in its discharging position and the trough in its loading position in the drawings the numeral 1 designates the side beams and 2 the end beams of an open base frame, which is preferably mounted upon suitable wheels 3. Upon the side beams 1 and an intermediate parallel beam 4, which is placed to one side of the frame, 1 mount standards 5, (i and 7. Two of these standards 6 and 7 areconsiderably higher than the standards 5, as will be apparent from an obvervation of Fig. 3. A transverse drive shaft 8 extends from the standard 5 to the standard 6 having one end suitably supported in the latter, while near its opposite end it is supported in a bearing box 9. On its extreme endwhich )rojects beyond the standard 5, a driving pulley 10 is loosely mounted. About the shaft 8, the lower ends of brackets 11 are mounted so as to freely swing on said shaft. On their upper sides,

the ground or common level. to be understood that the l'oregoing s always re the brackets are suitably secured to and support a rectangular frame 12 which is normally CllS osed at an angleand so maintained by a bloc 13 arranged on the upper side of ings and supports a conical 'or tapering drum 16 closed at its larger end, which is norm-ally its lower end. Within its smaller or upper end the drum is supported and caused to revolve with the shaft by means of a transverse. brace 17, see Fig. 6. The upper end or mouth of the drum terminates a suflicient distance'from the end of the frame 12 to permit the lower end of-u hopper 18 to project into the d rum This hopper while having its lower end projecting into the drum is fixedly supported on the frame 12 and has one end PIOJCClZlIlg over the side of the same, which will be hereinafter referred to. Beneath the hopper a discharge spout 19 snugly fitting about the lower half of the month end of the drum, is arranged. This discharge spout is suitably supported by angle brackets 20 secured to the frame 12 as best shownin Fig. 6.

From the description so far as given, it will be apparent that the drum is free to revolve indepemlently of the lit ppm 18 and the spout 1!). it is also to benoted that any suitable construction may be arranged in the drum for mixing and agitating the materials, al-

though in the drawi' gs l have merely illus-' tratcd blades 21 disios'ed at the bottom or large end of the drux l.

Bel ore ploccedin with the description of the means for revolving the drum, 1 will describe the means for delivering the materials to be mixed to the hopper 18. l-Ieretofore the materials have been delivered to the hopper of a mixing machine in various manncrs and it has been more often the practice to build a platform vor incline about the hopper or to install an elevator and eonveyer, so that the materials might be carried u and readily dumped into the hopper, the atter usually being from four to twelve feet above 1 do not wishit the case, but that in the actual practice t 'common.

, trough is sup )orted upon the upper flat sides of triangular rackets 23, which at their lower ends are secured to a transverse shaft 24, so as to be supported and swung thereby. The trough is supported so as to project over one end .of the frame and some'distance from the shaft 24 to permit one end being swung downward as will be hereinafter described. The trough in its normal or elevated position is disposed at an angle, higher and closed, while its inner .end is con tracted and curved to provide a mouth or discharge portion 25- which extends over that portion of the hopper 18 projecting over one side of the frame 12, as hereinbefore set forth. From this it will be apparent that materials placed in the trough 22, when the same is swung upward, will travel by gravity to the mouth 25 and from there into the hopper 18 to the drum 16; thus the necessity of a platform or elcvatorand conveyer,'is obviated.

I will now proceed to describe the gearing and mechanism for swinging thedrum and trough respectively: ()n the transverse shaft 8, I key a spur gear 26 between the standard 5 and the bracket 11. This spur gear meshes with a smaller spur gear 27 supported in abc'aring box 28 on the underside of the frame 12. The spur gear 27 meshes with a pinion 29 loose upon a short horizontal shaft 30. bushing 31 in the frame 12 and carries on its inner end a beveled gear 32 which meshes with the beveled gear 33 carried on the end of a longitudinal shaft 34. The shaft 34 is supported within the frame in a hanger 35 and a bearing 36. Near the bearing 36, the shaft 34 carries a pinion 37 which is adapted to mesh'with a gear ring 38 carried on the bottom or large end of the drum 16, the said gear ring being suitably secured to the drum, so as to revolve the same. It is to 'be understood that motion is not delivered to the shaft 30 by the gears 26 and 27 and the pinion 29, but by a sprocket clutch member 39 which is keyed on said shaft 30 and adapted to be moved longitudinally thereon by a lever 40 pivotally supported in a bracket 41 on the side of the frame 12. By means of the lever 40, the clutch sprocketinay be moved longitudinally on the shaft-into and out of engagement with the pinion 29. The said clutch sprocket is driven by a sprocket chain 42 engaging at its lower end with a sprocket 43 connected with and revolved by the band wheel 10.

Normally or during the mixing operation, when the parts are in the positions shown in Figs. 1, 2 and 6, the clutch sprocket 39 is out of engagement with the clutch pinion 29, so.

that while motion is being imparted to the drum by way of the shafts 30 and 34 and pin I key pinions 45, 45, 45 and 45.

its outer end being The shaft 30 extends through a stapes ion and gear 37 and 38 respectively,- the gears 26 and 27 and the pinion 29 are idle.

The gears 26 and 27 forin apart of the mechanism for swinging the drum and the trough, which I will now describe. .riene. the shaft 8, I arrange a transverse shit extending from thestandard thrmigl. the standard 6 to the standard 7. Onthis shaft I The pinion 45 meshes with the underside of the gear 26, while the next pinion 45* meshes with a gear 46 keyed on the shaft 8 between the bracket 11 and the standard 6, the said gear 46 being a substantial duplicate of the gear 26 as best shown in Fig. 3. Above the shaft 44 and between'the standards 6 and 7, i loosely mount a shaft 47 which hasfixed thereon intermediate gears 48 arranged directly over and meshing with the pinions 45 and 45 respectively; ltigidly secured on the shaft 24 between the brackets 23 and the standards 6 and 7 are large gears 49 which mesh with the intermediate gears 48. The brackets 23 may be secured to the gears '49 if desired, it being apparent that when motionis transmitted to said gears, the trough 22 which is supported by the brackets will be swung. v

Having described the different. parts of my mixer, I will now proceed to set'forth the operation of the same. Ne will assume that the parts are in their normal of mixing position as shown in Figs. 1 and 2., With the parts so operating, having been imparted to and the same revolving in the direction of the arrow as shown in Figf 1, the clutchsprocket 39 willbe separated from the-clutch pinion 29. Whenit is desired to discharge the mixed batch from the drum 16 and reload the same, the operator swings the lever 40 so that. the Y clutch sprocket 39 is moved into engagement with the clutch pinion 29. Motion is immediately imparted to said pinion and the same caused to turn to the right, reference being had to Figs. 1, 5 and 6. I The gear 27 meshin with the pinion 29 is revolved to the left and in turn revolves the gear 26 to the right, which latter meshing with, the pinion. 45, revolves the same and its shaft 44 to the left, reference being had to Fig. 1. The shaft 44 thus being revolved to the left, causes its pinions 45245- 145." to revolve in the same direction. The gear 46 meshing with the pinion 45 and being secured on the shaft8, like the gear 26, will assist the latter in swinging the frame 12 so that the spent 19 is depressed and the large end of the drum. elevated as indicated in Fig. 7, which view shows the parts in the reversed direction with relation to Fig. "1, therefore in the said figure, the shaft 44 would revolve to the right, and the gear'46 and consequently the shaft 8 to the leftyresulting in the swinging motion of course the band wheel 10 7 swing the 7 the latterbeing continuallyrevolved. When volve in an opposite of the frame 12 and the drum 16 as before I described. it will, be apparent that by reason of the intermediate gears 48, the gears 49 will be revolved in an opposite direction to y the gears 26 and 46, thus referring to Fig. 7

in which the shaft 44 revolves to the right,

the gears 49 will also be caused to revolve to the right by the intermediate pinions 4.8 t which revolve to the left. In this manner the trough by means of its brackets 23 is swung down to the base frame of the mixer,

so as to be readily loadedwhile the mixed batch is being dischar the drum and the trough are swung down as shown in Fig. 7, it is necessary to again lever so as to throw the clutch sprocket 39 out of engagement with the clutch pinion 29 and prevent further rotation of the swingin gears as will be apparent. When the troug 22 has been ioadedand the mixedbatch discharged from the drum and it is desired to return the parts to their normal or mixing position, the power means which transmits motion to, the band pulley iii is reversed so as to cause the same to redirection and the lever 40 swung to' again move the clutch sprocket 39 into enga 'ement with the clutch pinion 29. ,This wiii of course revolve the gears in an opposite direction, so that the trough anddrum are swung upward to the positions ed from the drum 16,

shown in Figsfl and 2 and upon the arrival of the sameat the said position, the lever 40 is again moved so as to disconnect the clutch sprocket 39 and clutch pinion 29, thus preventing further rotation of the gears. The

power means is ain reversedso that the band pulley 10 will be caused to revolve in its normal direction.

What I claim, is:

1. In a mixing machine, with a supporting frame of a mixing drum, means for feeding the materials to be mixed to the drum, and a common mechanism car-- ried by the supporting frame for simultanethe combination ously moving both the drum and the feeding and to move means to unload the former that it may be latter into such position loaded. I

2. In a mixing machine, the combination with a sup orting frame ofa mixing drum, means for eedin the materials-to be-mixed to said drum, an a common mechanism carried by the supporting frame for bodily moving the drum and the feeding means simultaneously' in opposite directions "to unload the former and, move the latter 'into such position that it may be loaded. 1 3. In a mixing machine, the combination with a sup orting frame, of 'a tilting frame, a, mixing rum rotatably mounted in said tilting frame, frame an adapted to conduct materialto the drum, a tiltin duct material to tifl hopper, and common mechanism for simultaneously tilting the drum to disohar e the contents thereof and tilting the trougid downwardly into such position that it may be loaded.

In testimony whereof I afiix myffsignature in presence of two witnesses. JOSEPH D. CAMPBELL.

Witnesses A. L. PHELPS, M. B. SOHLEY trough adapted to com the" a hopper carried by the tilting 

